STUDY AND NUMERICAL SIMULATION OF BLADES CORROSION EFFECTS ON A COMMERCIAL AXIAL TURBINE PERFORMANCE

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CHAHARTAGHI MAHMOUD; GHATEE MOJTABA; SAMAEE NIA ALI; KARRABI HADI

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Journal: Modares Mechanical Engineering Year:2015 | Volume:14 | Issue:15 Page(s): 279-289

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Title

STUDY AND NUMERICAL SIMULATION OF BLADES CORROSION EFFECTS ON A COMMERCIAL AXIAL TURBINE PERFORMANCE

Author(s)

CHAHARTAGHI MAHMOUD | GHATEE MOJTABA | SAMAEE NIA ALI | KARRABI HADI | Issue Writer Certificate

Keywords

TURBINEQ2

CORROSION OF THE BLADEQ2

THREE-DIMENSIONAL ANALYSISQ3

PERFORMANCE OF GAS TURBINEQ2

FLOW FIELDQ2

Abstract

With respect to special conditions applying to the gas TURBINE, its blades are affected by many different factors such as, hot corrosion, oxidation, wear, impact of external particles, etc. and are destroyed. Due to the reduction of their working life time, the TURBINE efficiency reduces and ultimately the heavy costs of periodic repairs are needed, and new replacements of their blades are unavoidable. The aim of this study is investigation of the effects of corrosion and blade damage on FLOW FIELD and gas TURBINE performance, by numerical simulation. In this research, a two stage TURBINE is modeled in the form of three dimension and the results are validated with experimental data. To analyze of the behavior of entire flow, conservation of mass, momentum, and energy equations are solved. The numerical simulation of the TURBINE is done with ANSYS CFX software. Then the increased rotors tip clearance effects with decreasing thickness due to corrosion in both nozzles and blade leading edge and trailing edge were separately studied on TURBINE FLOW FIELD and its performance in five actual different pressure ratios. The results showed that the most important factor in reducing the efficiency of gas TURBINE is due to rotor tip clearance increasing. Also, CORROSION OF THE BLADE edge with respect to the trailing edge damage is slightly more affected by reducing efficiency and increasing loss coefficients.

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APA: Copy

CHAHARTAGHI, MAHMOUD, GHATEE, MOJTABA, SAMAEE NIA, ALI, & KARRABI, HADI. (2015). STUDY AND NUMERICAL SIMULATION OF BLADES CORROSION EFFECTS ON A COMMERCIAL AXIAL TURBINE PERFORMANCE. MODARES MECHANICAL ENGINEERING, 14(15), 279-289. SID. https://sid.ir/paper/177690/en

Vancouver: Copy

CHAHARTAGHI MAHMOUD, GHATEE MOJTABA, SAMAEE NIA ALI, KARRABI HADI. STUDY AND NUMERICAL SIMULATION OF BLADES CORROSION EFFECTS ON A COMMERCIAL AXIAL TURBINE PERFORMANCE. MODARES MECHANICAL ENGINEERING[Internet]. 2015;14(15):279-289. Available from: https://sid.ir/paper/177690/en

IEEE: Copy

MAHMOUD CHAHARTAGHI, MOJTABA GHATEE, ALI SAMAEE NIA, and HADI KARRABI, “STUDY AND NUMERICAL SIMULATION OF BLADES CORROSION EFFECTS ON A COMMERCIAL AXIAL TURBINE PERFORMANCE,” MODARES MECHANICAL ENGINEERING, vol. 14, no. 15, pp. 279–289, 2015, [Online]. Available: https://sid.ir/paper/177690/en

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